|No. in series|No. in season|Title|Directed by|Written by|Original air date|Production code|U.S. viewers (millions)|
|---|---|---|---|---|---|---|---|
|1|1|"Pilot"|Jace Alexander|Matt Nix|June 28, 2007|BN100|4.0|
|2|2|"Identity"|Rod Hardy|Matt Nix|July 5, 2007|BN101|4.0|
|3|3|"Fight or Flight"|Colin Bucksey|Craig O'Neill & Jason Tracey|July 12, 2007|BN103|N/A|
|4|4|"Old Friends"|David Solomon|Alfredo Barrios, Jr.|July 19, 2007|BN102|N/A|
|5|5|"Family Business"|Sandy Bookstaver|Matt Nix|July 26, 2007|BN104|N/A|
|6|6|"Unpaid Debts"|Paul Holahan|Nick Thiel|August 2, 2007|BN105|4.41|
|7|7|"Broken Rules"|Tim Matheson|Mere Smith|August 9, 2007|BN106|N/A|
|8|8|"Wanted Man"|Ken Girotti|Craig O'Neill & Jason Tracey|August 16, 2007|BN107|N/A|
|9|9|"Hard Bargain"|John Kretchmer|Alfredo Barrios, Jr.|August 23, 2007|BN108|4.08|
|10|10|"False Flag"|Paul Shapiro|Matt Nix & Ben Watkins|September 13, 2007|BN109|4.0|
|11|11|"Dead Drop"|Jeremiah Chechik|Craig O'Neill & Jason Tracey|September 20, 2007|BN110|4.8|
|12|12|"Loose Ends"|Stephen Surjik|Matt Nix & Alfredo Barrios, Jr.|September 20, 2007|BN111|4.8|

Question: how many episodes were written by matt nix?
Answer: 5